This is a sources-sought market research notice, not an RFP, seeking qualified small-business sources for a potential single-award firm-fixed-price IDIQ architect-engineer contract for environmental planning and engineering services supporting NEPA, EO 12114, ship homeporting, and related operational issues. The work is interdisciplinary and includes environmental documentation, consultations and permits, studies, modeling, outreach, and related technical support. Performance would cover NAVFAC Atlantic and NAVFAC Pacific AORs plus adjacent Atlantic and Pacific waters, including CONUS, the Caribbean, Europe, and North Africa, with tasks possibly assigned worldwide. The anticipated contract would have a base period plus four one-year options for five years total, with task orders not exceeding an estimated $75 million over the contract life. Small businesses including SDVOSB, VOSB, EDWOSB, WOSB, 8(a), HUBZone, and other small businesses are encouraged to respond; large-business submittals will not be considered.